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Please use the bim+ Project Service for creating/deleting an issue or for getting all the issues assigned to a project and bim+ Issue Service for doing all the other possible issue related actions.
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Pins are relation between an issue and an object. It defines position of an issue in the 3D space. Please see the detailed structure of the issue in the Object Model
Please use the bim+ Project Service for creating/deleting a pin or for getting all the pins assigned to an issue and bim+ Pin Service for doing all the other possible pin related actions.
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